Display Verification; Thermocouple Measure Verification - Fluke 712 Calibration Manual

Display Verification

1. Press and hold the I key and then press and release the green O key. This locks
the 714 in a mode where all display segments are on. All segments will stay on until
the I key is released.
2. Check to see that all segments of the display are showing.
3. Turn the 714 off.
The 714 verification test is now complete.
714 Verification (V2.0 and Later)

Thermocouple Measure Verification

1. Press the O
that the display indicates:
INPUT
where xx.x is some variable number; or OL (overload) may be indicated.
2. Press the T
thermocouple test lead from the TC jack of the Fluke 5520A to the TC jack on the
714 Calibrator, observing correct polarity.
3. Set the Fluke 5520A to output in Type J thermocouple, press the Okey, and set
the 5520A to the settings in Table 49, verifying the display readings on the 714:
Fluke 5520A
-200.00 °C
0.00 °C
800.00 °C
1200.00 °C
7. Disconnect the Type J thermocouple test lead and install the two-wire copper test
lead from the Fluke 5520A NORMAL jacks to the 714 Calibrator TC jack, observing
correct polarity.
8. On the 714 press the
9. Set the Fluke 5520A to the settings in Table 50, and verify the display readings on
the 714 Calibrator.
Table 50. 714 Thermocouple Measure Verification (mA)
Fluke 5520A
-10.0000 mV
30.0000 mV
75.0000 mV
10. Disconnect the copper test lead from the Fluke 5520A.
key to turn on the 714 Calibrator. Press the
xx.x °C
key to measure Type J thermocouple and connect the Type J
Table 49. 714 Thermocouple Measure Verification
T key until "mV" is shown on the display.
I key and the C
Fluke 714
-200.6 °C to -199.4 °C
-0.4 °C to +0.4 °C
799.6 °C to 800.4 °C
1199.5 °C to 1200.5 °C
Fluke 714
-10.012 to -9.988 mV
29.985 to 30.025 mV
74.979 to 75.021 mV
Process Calibrators
Verification
key so
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